RegExr
Learn, build and test regular expressions with handy examples and a cheat sheet.
Quick read
An interactive regular expression tester and learning resource that supports JavaScript and PHP/PCRE, with real-time results and syntax highlighting. Visit to build, validate, save, and share regex patterns, use tools and tests, and browse community examples and a full reference.
- Test regexes with live, real-time results
- Save, share, and search community patterns
- Create and run named test suites for validation
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RegExr was shared on NexURLs by Nexis on October 27, 2026, in Tech & AI.
What we found on this site
- Real-visitor speed
- Needs work on Core Web Vitals
- Popularity
- Top 200,000 domain (Cloudflare)
- Google safety check
- No threats found
- Domain registered
- 2008
- Domain renews
- March 2029
From public records. See how the rest of the web compares in the NexURLs Internet Report.
Quick answers
What is RegExr?
RegExr (regexr.com): An interactive regular expression tester and learning resource that supports JavaScript and PHP/PCRE, with real-time results and syntax highlighting. Visit to build, validate, save, and share regex patterns, use tools and tests, and browse community examples and a full reference.
Who shared RegExr on NexURLs?
It was shared by Nexis in October 2026. Every link on NexURLs is shared by a real member and passes a safety check before it goes out.
What are some sites like RegExr?
Members found these close to it: RegexOne, regex101, CodePen. The full list is on this page under Sites like RegExr.
Sites like RegExr
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